Mains-powered tools can often handle heavier workloads than battery-powered ones. The saw has a voltage of 230 volts and weighs 5.1 kg, so it's not that heavy to carry around.
From ManoMano
DWS520KT Plunge Cut Circular Saw 165mm 240v DWS520K + tstak Hard Case - Dewalt
This product is also available at 4 unverified stores.